Am I pregnant?

Hubby and I normally use protection, but we got super horny and forgot the day my period was supposed to start. He didn’t ejaculate in me, he pulled out before that. But normally we’re careful to not even let precum get in me.

Now my periods a day late and I’m so nervous. Could I be pregnant? I’m also breastfeeding. Since my periods came back, they’ve all been 30 day cycles. This would be 31 days.